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使小鼠缺氧以及低剂量226Raγ射线连续照射，或者缺氧复合低剂量照射，均能使小鼠骨髓有核细胞染色单体断裂数增多。
Mice hypoxia and low doses of 226Raγ-ray continuous irradiation, or hypoxia combined with low-dose irradiation, can make mouse bone marrow nucleated cells increased number of chromatid breaks.